<div class="main_menu">
    <div class="tool_icon" *ngIf="this.current !=41"><img src="./assets/images/tool/tool-gray.png" alt="" width="45px"></div>
    <div class="tool_icon" (click)='toolShow()' *ngIf="this.current ==41" [ngStyle]="{cursor: 'pointer'}"><img src="./assets/images/tool/tool.png" alt="" width="45px"></div>
    <div class="tool_icon"><img src="./assets/images/tool/control-gray.png" alt="" width="45px"></div>
    <div class="tool_icon"><img src="./assets/images/tool/data-gray.png" alt="" width="45px"></div>
</div>